Bruuhhhh, this is the exact ish my daddy was doing a couple months ago. Lost blood circulation in both of his legs, tissue started dying and poisoning him (killing him slowly) and instead of signing off on the amputation he signed himself out of the hospital because he just wanted to go home. Someone actually picked him up and took him home (he was back later that night tho
)
Long story short, he ended up in hospice for a couple weeks before finally deciding to get the surgery. At that point, they had to take both of his legs and now he's at home doing the exact same stuff that landed him in that situation in the first place.
There is only so much you can do for him, op. It's hard not to stress over it but he's a grown man and you can't hold him down and force him to get his life in order. It sucks to watch people basically give up but, seriously, what can you do?